Detections
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OpenVPN < 2.3.15 / 2.4.x < 2.4.2 Denial of Service Vulnerability (Windows)

medium Nessus Plugin ID 125257

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Synopsis

An application on the remote Windows host is affected by a denial of service vulnerability.

Description

According to its self-reported version number, the version of OpenVPN installed on the remote Windows host is prior to 2.3.15 or 2.4.x prior to 2.4.2. It is, therefore, affected by a denial of service vulnerability due to the unchecked rolling over of its packet-ID counter. An unauthenticated, remote attacker can exploit this issue, by sending a large number of packets, to cause the application to stop responding.

Solution

Upgrade to OpenVPN 2.3.15 / 2.4.2 or later.

See Also

http://www.nessus.org/u?5c722f7c

Plugin Details

Severity: Medium

ID: 125257

File Name: openvpn_2_4_2_cve_2017_7479.nasl

Version: 1.4

Type: local

Agent: windows

Family: Windows

Published: 5/17/2019

Updated: 10/30/2019

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 4

Temporal Score: 3

Vector: CVSS2#AV:N/AC:L/Au:S/C:N/I:N/A:P

CVSS Score Source: CVE-2017-7479

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:openvpn:openvpn

Required KB Items: installed_sw/OpenVPN Server

Exploit Ease: No known exploits are available

Patch Publication Date: 5/11/2017

Vulnerability Publication Date: 5/4/2017

Reference Information

CVE: CVE-2017-7479